<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>登陆</h1>
<p th:text="${msg}" style="color: red"></p>

<form th:action="@{/login}">
    <p>用户名: <input type="text" name="username"></p>
    <p>密码: <input type="password" name="password"></p>
    <P><input type="submit"></P>

</form>

</body>
</html>